4P Smart Circuit Breaker
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Product Description
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This RS485 Smart Circuit Breaker directly replaces traditional circuit breakers. While retaining comprehensive electrical protection (including overload, short-circuit, and leakage protection), it integrates an RS485 communication interface and an open MODBUS RTU protocol. It effectively resolves pain points such as exclusive local manual operation, high maintenance costs, lack of safety interlocks, difficulty in integrating with intelligent systems, and poor adaptability in harsh environments. Supporting remote on/off control, real-time power data collection, and centralized network management, it is ideal for intelligent power distribution upgrades across industrial, agricultural, and residential scenarios.
Key Specifications
| Topology / product type | RS485 smart circuit breaker |
|---|---|
| Channels / ports | 4P (L1/L2/L3/N) |
| Interfaces | RS485 (2-wire); L1/L2/L3/N power terminals |
| Protocols | Modbus RTU; address 1; 9600 bps default (600–230400 supported) |
| Electrical rating | 10/16/20/32/63 A current variants; 6 kA breaking capacity |
| Power input | AC 380/400 V, 50/60 Hz |
| Measurement / accuracy | Metering version: phase voltage, current, power, energy, power factor, frequency, and temperature |
| Dimensions | 72 × 80 × 66 mm |
| Mounting | 35 mm DIN rail |
| Operating environment | −5 to +40 °C working; ≤50% RH at +40 °C; altitude ≤2000 m |
| Protection rating | IP20; overload, short-circuit, leakage, and temperature protection are version-dependent |
| Key functions | Remote open/close, hardware lockout, power-off memory; M/NM variants; confirm function version before ordering. |
Best Fit
√ Smart Agriculture: Irrigation, Aquaculture, Greenhouses
√ Industrial & Manufacturing: Production Lines, Motors, Pumps, Blowers
√ Commercial & Residential: Smart Buildings, KTV, Smart Homes
√ Infrastructure: Power O&M, Charging Stations, Base Stations
√ Specialized Sectors: Mining, Stage Equipment, Lifting Devices
Y-504 Solution
1. Open Networking: Standard RS485 + Modbus RTU, seamless platform integration. Supports single/network control, unlimited remote control, no gateway required.
2. Local & Remote Control: Built-in motor operation, tool-free on/off. Manual handle included. Remote lock ensures safe maintenance.
3.Full Protection: Overload, short-circuit, over/under-voltage, leakage protection. 6kA breaking capacity, arc suppression, safety interlock, moisture-proof.
4.Smart Functions: Power-off memory, auto-recovery, real-time data monitoring, timer & scene modes.
5.Industrial Quality: High-performance MCU, V0 flame-retardant, 6kV impact resistance, EMC certified. Long mechanical & electrical life.
6.Easy Installation: 1P/2P/3P/4P options, compact design, simple wiring, compatible with 220V/380V systems.
Additional Technical Details
|
Parameter |
Specification |
|
Product Name |
RS485 Smart Circuit Breaker |
|
Poles |
1P/2P/3P/4P |
|
Rated Voltage |
Customizable DC 110V-220V; AC 220V (2P) / AC 400V (4P) |
|
Rated Current |
6A/20A/25A/32A/40A/63A/80A/100A |
|
Short-Circuit Breaking Capacity |
6kA |
|
Leakage Protection |
30mA, Tripping Time ≤0.04s |
|
Communication |
RS485, MODBUS RTU Open Protocol |
|
Mechanical Life |
≥10,000 Cycles |
|
Electrical Life |
≥6,000 Cycles |
|
Impulse Withstand Voltage |
6kV |
|
Protection Degree |
IP20 |
|
Operating Temperature |
-25℃ ~ +65℃ |
|
Compliance |
GB10963.1; IEC60898-1 |
Control Principle
√ Single-Device Control: Connect a computer directly to a single breaker via a USB-to-RS485 module and RS485 twisted pair for local and remote control.
√ System Networking: Expand the RS485 bus using a hub to connect multiple breakers, allowing a single host computer to centrally manage all devices.
Wiring Method
√ 220V (1P): Connect live/neutral wire to the upper terminals, and live/neutral wire to the lower load terminals. Connect the neutral wire to the N terminal on the left.
√ 380V (3P/4P): Connect multi-phase live and neutral wires to the upper terminals, and corresponding wires to the lower load terminals. Connect the neutral wire to the N terminal on the left for 3-level protection.